译林版九年级下册英语第四单元Unit4《Life on Mars》知识点详解
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1、九年级下册英语单元知识点详解Unit4Life on Mars1Comic strip&Welcome to the unit(1)Me neither(P50)Me neither意为“我也不”,源于“neither+be动词/助动词/情态动词+与前句不同的主语”,用于说明后一句所述的情况与前一句所述的否定情况相同,neither用作副词,表示“也不”。例句:-He hasnt been to Hong Kong-Me neither(2)How do you likelife on Mars? How do you like? =What do you think of? 意思是“你觉得怎
2、么样”。例句:-How do you like the Great Wall?-Its greatI like it very much(3)And we mightneed sleeping bags too(P51)might这里意为“可能”,表示推测,另外,might还可以表示请求,意为“可以”。例句:He said he might be late, but he was earlyMight I use your bike?2Reading(1)At present, our spacecraft are too slow to carrylarge numbers ofpassen
3、gers to Mars-it would take months(P52)a number of相当于numbers of意为“许多、大量”用来修饰可数名词复数,作主语时,谓语动词用复数形式;the number of意为“的数量”,作主语时,谓语动词用单数形式。例如:A number of students are playing tennisThe number of the students in our school is over 2000(2)The gravity on Mars is only aboutthree-eighteensof that on the Earth(
4、P53)分数的表达分子用基数词,分母用序数词,分子大于1时,分母加s表示复数。例如:1/3 one third 3/8 three eighths“分数+of+名词”作主语时,谓语动词单复数,取决于名词的单复数。名词为单数则谓语动词用单数,名词为复数则谓语动词用复数。例如:Two thirds of the land is covered with water三分之二的陆地都是被水所覆盖的。One fifth of the students come from the countryside五分之一的学生来自农村。(3) People would have to wear boots that
5、 are specially designed toprevent themselves from floatingoff into space(P53)prevent表示“阻止”时,常用于“prevent sbfrom doing sth. ”结构中,意为“阻止某人做某事”,动词prevent也可以换成stop或者keep。例句:We should prevent/stop/keep farmers from cutting the forests(4)Compared withlife on the Earth, life on Mars would be better in some w
6、ays(P53)compare表示“比较”时,常用的结构有两个:comparewith “把同比较”;compareto “把比作”。例句:Dont compare your children with othersWe often compare the little kids to the flowers of the motherland(5) Life on Mars would be interestingas well aschallenging(P53)as well as表示“既又”,连接两个成分作主语时,谓语动词的单复数通常与as well as前主语保持一致。例句:Mr F
7、ang grows flowers as well as vegetablesJack as well as his parents is going to London3Grammar(1)Are scientists inagreementthat living on Mars would be possible for humans in the future? (P57) agreement名词,意为“同意、协议”,in agreement表示“同意、一致”。例句:Mr Zhang nodded in agreementIm glad we are in agreement about
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